use a file source object to abstract loading of resources

linux/main.cpp

@@ -45,15 +45,6 @@ int main(int argc, char *argv[]) {
     sigIntHandler.sa_flags = 0;
     sigaction(SIGINT, &sigIntHandler, NULL);
 
-    // read default stylesheet from disk
-    std::ifstream stylefile("./style.min.js");
-    if (!stylefile.good()) {
-        fprintf(stderr, "Cannot read style file\n");
-        return 1;
-    }
-    std::stringstream stylejson;
-    stylejson << stylefile.rdbuf();
-
     view = new GLFWView();
     mbgl::Map map(*view);
 
@@ -72,7 +63,10 @@ int main(int argc, char *argv[]) {
     }
 
     // Load style
-    map.setStyleJSON(stylejson.str());
+    std::string style = "file://";
+    style += uv::cwd();
+    style += "/styles/bright/style.json";
+    map.setStyleURL(style);
 
     int ret = view->run();